In a few months, the orbit of a star deep in the core of the Milky Way will cause it to pass within 18.4 billion kilometers (11.4 billion miles) of the supermassive black hole at the center of the galaxy, Sagittarius A*. This event is of particular interest to physicists, as the plummeting star, S0-2, will speed up to 3 percent of the speed of light as it slingshots around its supermassive parent–a prime opportunity to test Einstein’s Theory of General Relativity.
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An archaeological expedition aimed at plumbing the secrets of Chichen Itza’s underworld of the gods has uncovered the well-preserved remains of ancient humans and extinct animals that date back to the last ice age–far more than what the expedition’s members bargained for when they set out to map and explore the sacred network of Mayan caves. The nature of some of the fossils found there also hinted at the occurrence of a "catastrophic event" that embedded some of the bones in the walls of the cave.
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